A027176 a(n) = A027170(2n-1, n-2).

7, 43, 185, 740, 2900, 11293, 43897, 170608, 663438, 2582058, 10058862, 39225116, 153111686, 598228961, 2339499161, 9157016216, 35870666366, 140623656686, 551684484386, 2165796506636, 8507878418516, 33441451138598

Offset

2,1

Links

Table of n, a(n) for n=2..23.

Crossrefs

Sequence in context: A143569 A351936 A193697 * A244200 A334241 A079925

Adjacent sequences: A027173 A027174 A027175 * A027177 A027178 A027179

Keyword

nonn

Author

Clark Kimberling

Status

approved